package/mac80211/patches/540-ath9k_rc_debugfs.patch

   1 --- a/drivers/net/wireless/ath/ath9k/debug.c
   2 +++ b/drivers/net/wireless/ath/ath9k/debug.c
   3 @@ -378,95 +378,6 @@ static const struct file_operations fops
   4         .owner = THIS_MODULE
   5  };
   6
   7 -void ath_debug_stat_rc(struct ath_softc *sc, int final_rate)
   8 -{
   9 -       struct ath_rc_stats *stats;
  10 -
  11 -       stats = &sc->debug.stats.rcstats[final_rate];
  12 -       stats->success++;
  13 -}
  14 -
  15 -void ath_debug_stat_retries(struct ath_softc *sc, int rix,
  16 -                           int xretries, int retries, u8 per)
  17 -{
  18 -       struct ath_rc_stats *stats = &sc->debug.stats.rcstats[rix];
  19 -
  20 -       stats->xretries += xretries;
  21 -       stats->retries += retries;
  22 -       stats->per = per;
  23 -}
  24 -
  25 -static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
  26 -                               size_t count, loff_t *ppos)
  27 -{
  28 -       struct ath_softc *sc = file->private_data;
  29 -       char *buf;
  30 -       unsigned int len = 0, max;
  31 -       int i = 0;
  32 -       ssize_t retval;
  33 -
  34 -       if (sc->cur_rate_table == NULL)
  35 -               return 0;
  36 -
  37 -       max = 80 + sc->cur_rate_table->rate_cnt * 1024 + 1;
  38 -       buf = kmalloc(max, GFP_KERNEL);
  39 -       if (buf == NULL)
  40 -               return -ENOMEM;
  41 -
  42 -       len += sprintf(buf, "%6s %6s %6s "
  43 -                      "%10s %10s %10s %10s\n",
  44 -                      "HT", "MCS", "Rate",
  45 -                      "Success", "Retries", "XRetries", "PER");
  46 -
  47 -       for (i = 0; i < sc->cur_rate_table->rate_cnt; i++) {
  48 -               u32 ratekbps = sc->cur_rate_table->info[i].ratekbps;
  49 -               struct ath_rc_stats *stats = &sc->debug.stats.rcstats[i];
  50 -               char mcs[5];
  51 -               char htmode[5];
  52 -               int used_mcs = 0, used_htmode = 0;
  53 -
  54 -               if (WLAN_RC_PHY_HT(sc->cur_rate_table->info[i].phy)) {
  55 -                       used_mcs = snprintf(mcs, 5, "%d",
  56 -                               sc->cur_rate_table->info[i].ratecode);
  57 -
  58 -                       if (WLAN_RC_PHY_40(sc->cur_rate_table->info[i].phy))
  59 -                               used_htmode = snprintf(htmode, 5, "HT40");
  60 -                       else if (WLAN_RC_PHY_20(sc->cur_rate_table->info[i].phy))
  61 -                               used_htmode = snprintf(htmode, 5, "HT20");
  62 -                       else
  63 -                               used_htmode = snprintf(htmode, 5, "????");
  64 -               }
  65 -
  66 -               mcs[used_mcs] = '\0';
  67 -               htmode[used_htmode] = '\0';
  68 -
  69 -               len += snprintf(buf + len, max - len,
  70 -                       "%6s %6s %3u.%d: "
  71 -                       "%10u %10u %10u %10u\n",
  72 -                       htmode,
  73 -                       mcs,
  74 -                       ratekbps / 1000,
  75 -                       (ratekbps % 1000) / 100,
  76 -                       stats->success,
  77 -                       stats->retries,
  78 -                       stats->xretries,
  79 -                       stats->per);
  80 -       }
  81 -
  82 -       if (len > max)
  83 -               len = max;
  84 -
  85 -       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
  86 -       kfree(buf);
  87 -       return retval;
  88 -}
  89 -
  90 -static const struct file_operations fops_rcstat = {
  91 -       .read = read_file_rcstat,
  92 -       .open = ath9k_debugfs_open,
  93 -       .owner = THIS_MODULE
  94 -};
  95 -
  96  static const char * ath_wiphy_state_str(enum ath_wiphy_state state)
  97  {
  98         switch (state) {
  99 @@ -1024,10 +935,6 @@ int ath9k_init_debug(struct ath_hw *ah)
 100                         sc, &fops_interrupt))
 101                 goto err;
 102
 103 -       if (!debugfs_create_file("rcstat", S_IRUSR, sc->debug.debugfs_phy,
 104 -                       sc, &fops_rcstat))
 105 -               goto err;
 106 -
 107         if (!debugfs_create_file("wiphy", S_IRUSR | S_IWUSR,
 108                         sc->debug.debugfs_phy, sc, &fops_wiphy))
 109                 goto err;
 110 --- a/drivers/net/wireless/ath/ath9k/debug.h
 111 +++ b/drivers/net/wireless/ath/ath9k/debug.h
 112 @@ -80,13 +80,6 @@ struct ath_interrupt_stats {
 113         u32 bb_watchdog;
 114  };
 115
 116 -struct ath_rc_stats {
 117 -       u32 success;
 118 -       u32 retries;
 119 -       u32 xretries;
 120 -       u8 per;
 121 -};
 122 -
 123  /**
 124   * struct ath_tx_stats - Statistics about TX
 125   * @tx_pkts_all:  No. of total frames transmitted, including ones that
 126 @@ -160,7 +153,6 @@ struct ath_rx_stats {
 127
 128  struct ath_stats {
 129         struct ath_interrupt_stats istats;
 130 -       struct ath_rc_stats rcstats[RATE_TABLE_SIZE];
 131         struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES];
 132         struct ath_rx_stats rxstats;
 133  };
 134 @@ -177,12 +169,9 @@ void ath9k_exit_debug(struct ath_hw *ah)
 135  int ath9k_debug_create_root(void);
 136  void ath9k_debug_remove_root(void);
 137  void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
 138 -void ath_debug_stat_rc(struct ath_softc *sc, int final_rate);
 139  void ath_debug_stat_tx(struct ath_softc *sc, struct ath_txq *txq,
 140                        struct ath_buf *bf, struct ath_tx_status *ts);
 141  void ath_debug_stat_rx(struct ath_softc *sc, struct ath_rx_status *rs);
 142 -void ath_debug_stat_retries(struct ath_softc *sc, int rix,
 143 -                           int xretries, int retries, u8 per);
 144
 145  #else
 146
 147 @@ -209,11 +198,6 @@ static inline void ath_debug_stat_interr
 148  {
 149  }
 150
 151 -static inline void ath_debug_stat_rc(struct ath_softc *sc,
 152 -                                    int final_rate)
 153 -{
 154 -}
 155 -
 156  static inline void ath_debug_stat_tx(struct ath_softc *sc,
 157                                      struct ath_txq *txq,
 158                                      struct ath_buf *bf,
 159 @@ -226,11 +210,6 @@ static inline void ath_debug_stat_rx(str
 160  {
 161  }
 162
 163 -static inline void ath_debug_stat_retries(struct ath_softc *sc, int rix,
 164 -                                         int xretries, int retries, u8 per)
 165 -{
 166 -}
 167 -
 168  #endif /* CONFIG_ATH9K_DEBUGFS */
 169
 170  #endif /* DEBUG_H */
 171 --- a/drivers/net/wireless/ath/ath9k/rc.c
 172 +++ b/drivers/net/wireless/ath/ath9k/rc.c
 173 @@ -1026,6 +1026,16 @@ static bool ath_rc_update_per(struct ath
 174         return state_change;
 175  }
 176
 177 +static void ath_debug_stat_retries(struct ath_rate_priv *rc, int rix,
 178 +                                  int xretries, int retries, u8 per)
 179 +{
 180 +       struct ath_rc_stats *stats = &rc->rcstats[rix];
 181 +
 182 +       stats->xretries += xretries;
 183 +       stats->retries += retries;
 184 +       stats->per = per;
 185 +}
 186 +
 187  /* Update PER, RSSI and whatever else that the code thinks it is doing.
 188     If you can make sense of all this, you really need to go out more. */
 189
 190 @@ -1098,7 +1108,7 @@ static void ath_rc_update_ht(struct ath_
 191                 ath_rc_priv->per_down_time = now_msec;
 192         }
 193
 194 -       ath_debug_stat_retries(sc, tx_rate, xretries, retries,
 195 +       ath_debug_stat_retries(ath_rc_priv, tx_rate, xretries, retries,
 196                                ath_rc_priv->per[tx_rate]);
 197
 198  }
 199 @@ -1294,6 +1304,7 @@ static void ath_rc_init(struct ath_softc
 200         ath_rc_sort_validrates(rate_table, ath_rc_priv);
 201         ath_rc_priv->rate_max_phy = ath_rc_priv->valid_rate_index[k-4];
 202         sc->cur_rate_table = rate_table;
 203 +       ath_rc_priv->rate_table = rate_table;
 204
 205         ath_print(common, ATH_DBG_CONFIG,
 206                   "RC Initialized with capabilities: 0x%x\n",
 207 @@ -1340,6 +1351,15 @@ static bool ath_tx_aggr_check(struct ath
 208  /* mac80211 Rate Control callbacks */
 209  /***********************************/
 210
 211 +static void ath_debug_stat_rc(struct ath_rate_priv *rc, int final_rate)
 212 +{
 213 +       struct ath_rc_stats *stats;
 214 +
 215 +       stats = &rc->rcstats[final_rate];
 216 +       stats->success++;
 217 +}
 218 +
 219 +
 220  static void ath_tx_status(void *priv, struct ieee80211_supported_band *sband,
 221                           struct ieee80211_sta *sta, void *priv_sta,
 222                           struct sk_buff *skb)
 223 @@ -1419,7 +1439,7 @@ static void ath_tx_status(void *priv, st
 224                 }
 225         }
 226
 227 -       ath_debug_stat_rc(sc, ath_rc_get_rateindex(sc->cur_rate_table,
 228 +       ath_debug_stat_rc(ath_rc_priv, ath_rc_get_rateindex(sc->cur_rate_table,
 229                 &tx_info->status.rates[final_ts_idx]));
 230  }
 231
 232 @@ -1521,6 +1541,94 @@ static void ath_rate_update(void *priv,
 233         }
 234  }
 235
 236 +#ifdef CONFIG_ATH9K_DEBUGFS
 237 +
 238 +static int ath9k_debugfs_open(struct inode *inode, struct file *file)
 239 +{
 240 +       file->private_data = inode->i_private;
 241 +       return 0;
 242 +}
 243 +
 244 +static ssize_t read_file_rcstat(struct file *file, char __user *user_buf,
 245 +                               size_t count, loff_t *ppos)
 246 +{
 247 +       struct ath_rate_priv *rc = file->private_data;
 248 +       char *buf;
 249 +       unsigned int len = 0, max;
 250 +       int i = 0;
 251 +       ssize_t retval;
 252 +
 253 +       if (rc->rate_table == NULL)
 254 +               return 0;
 255 +
 256 +       max = 80 + rc->rate_table->rate_cnt * 1024 + 1;
 257 +       buf = kmalloc(max, GFP_KERNEL);
 258 +       if (buf == NULL)
 259 +               return -ENOMEM;
 260 +
 261 +       len += sprintf(buf, "%6s %6s %6s "
 262 +                      "%10s %10s %10s %10s\n",
 263 +                      "HT", "MCS", "Rate",
 264 +                      "Success", "Retries", "XRetries", "PER");
 265 +
 266 +       for (i = 0; i < rc->rate_table->rate_cnt; i++) {
 267 +               u32 ratekbps = rc->rate_table->info[i].ratekbps;
 268 +               struct ath_rc_stats *stats = &rc->rcstats[i];
 269 +               char mcs[5];
 270 +               char htmode[5];
 271 +               int used_mcs = 0, used_htmode = 0;
 272 +
 273 +               if (WLAN_RC_PHY_HT(rc->rate_table->info[i].phy)) {
 274 +                       used_mcs = snprintf(mcs, 5, "%d",
 275 +                               rc->rate_table->info[i].ratecode);
 276 +
 277 +                       if (WLAN_RC_PHY_40(rc->rate_table->info[i].phy))
 278 +                               used_htmode = snprintf(htmode, 5, "HT40");
 279 +                       else if (WLAN_RC_PHY_20(rc->rate_table->info[i].phy))
 280 +                               used_htmode = snprintf(htmode, 5, "HT20");
 281 +                       else
 282 +                               used_htmode = snprintf(htmode, 5, "????");
 283 +               }
 284 +
 285 +               mcs[used_mcs] = '\0';
 286 +               htmode[used_htmode] = '\0';
 287 +
 288 +               len += snprintf(buf + len, max - len,
 289 +                       "%6s %6s %3u.%d: "
 290 +                       "%10u %10u %10u %10u\n",
 291 +                       htmode,
 292 +                       mcs,
 293 +                       ratekbps / 1000,
 294 +                       (ratekbps % 1000) / 100,
 295 +                       stats->success,
 296 +                       stats->retries,
 297 +                       stats->xretries,
 298 +                       stats->per);
 299 +       }
 300 +
 301 +       if (len > max)
 302 +               len = max;
 303 +
 304 +       retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
 305 +       kfree(buf);
 306 +       return retval;
 307 +}
 308 +
 309 +static const struct file_operations fops_rcstat = {
 310 +       .read = read_file_rcstat,
 311 +       .open = ath9k_debugfs_open,
 312 +       .owner = THIS_MODULE
 313 +};
 314 +
 315 +static void ath_rate_add_sta_debugfs(void *priv, void *priv_sta,
 316 +                                    struct dentry *dir)
 317 +{
 318 +       struct ath_rate_priv *rc = priv_sta;
 319 +       debugfs_create_file("rc_stats", S_IRUGO, dir, rc, &fops_rcstat);
 320 +}
 321 +
 322 +#endif /* CONFIG_ATH9K_DEBUGFS */
 323 +
 324  static void *ath_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
 325  {
 326         struct ath_wiphy *aphy = hw->priv;
 327 @@ -1567,6 +1675,9 @@ static struct rate_control_ops ath_rate_
 328         .free = ath_rate_free,
 329         .alloc_sta = ath_rate_alloc_sta,
 330         .free_sta = ath_rate_free_sta,
 331 +#ifdef CONFIG_ATH9K_DEBUGFS
 332 +       .add_sta_debugfs = ath_rate_add_sta_debugfs,
 333 +#endif
 334  };
 335
 336  int ath_rate_control_register(void)
 337 --- a/drivers/net/wireless/ath/ath9k/rc.h
 338 +++ b/drivers/net/wireless/ath/ath9k/rc.h
 339 @@ -176,6 +176,13 @@ struct ath_rateset {
 340         u8 rs_rates[ATH_RATE_MAX];
 341  };
 342
 343 +struct ath_rc_stats {
 344 +       u32 success;
 345 +       u32 retries;
 346 +       u32 xretries;
 347 +       u8 per;
 348 +};
 349 +
 350  /**
 351   * struct ath_rate_priv - Rate Control priv data
 352   * @state: RC state
 353 @@ -212,6 +219,10 @@ struct ath_rate_priv {
 354         struct ath_rateset neg_rates;
 355         struct ath_rateset neg_ht_rates;
 356         struct ath_rate_softc *asc;
 357 +       const struct ath_rate_table *rate_table;
 358 +
 359 +       struct dentry *debugfs_rcstats;
 360 +       struct ath_rc_stats rcstats[RATE_TABLE_SIZE];
 361  };
 362
 363  #define ATH_TX_INFO_FRAME_TYPE_INTERNAL        (1 << 0)